I looked at the contents of my webmail spam folder and got a shock. Items get automatically deleted after 2-3 weeks but there were still some there that should not have been classed as spam. Several notifications from various threads of the forum, transcripts from a couple of discussions with FMP support, and even a message from my old university. Most were duplicates of mail items which did get through to me but not the forum notifications. I will contact Spark to find out just what is going on. Perhaps they had a problem or two but got it sorted and did not tell everybody once things were back to normal.
I suggest that any other NZ forum members using Spark as their email provider should check their webmail spam folder. Thanks AhiNZ for the suggestion.